Quasi-random copolymers from homopolymers

Details Quasi-random copolymers from homopolymers Quasi-random copolymers from homopolymers

1982-04-22

1983-11-22

Lieberman, Paul

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524147, 524149, 524153, C08L 7702

Patent

active

044170327

ABSTRACT:
A process for preparing quasi-random copolymers is described which involves heating a mixture of polyamides in the presence of one or more phosphite promotor(s). The process is conducted at temperatures between about 265.degree. C. and 315.degree. C. with the process time generally ranging from about 2 to about 20 minutes. The process is especially useful for preparing copolymers from a mixture of poly(caproamide) and poly(hexamethylene adipamide). The copolymer products prepared in accordance with the process are particularly suitable for the production of plastic films which have improved properties as compared to either of the homopolymers.

REFERENCES:
patent: 2193529 (1940-03-01), Coffman
patent: 2347137 (1945-04-01), Salisbury
patent: 2996474 (1961-08-01), Voigt
patent: 3509107 (1970-04-01), Brignac
patent: 3536780 (1970-10-01), Schaaf
patent: 3551548 (1970-12-01), Brignac et al.
patent: 3995084 (1976-11-01), Berger

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